Ford TXDB 2.0 TDCi Injector Problems: Symptoms & Repair (UK)

The TXDB-series 2.0 TDCi powers the Focus Mk3, Mondeo Mk5, and Kuga. It uses Bosch or Delphi injection depending on variant and production date. This engine was widely sold in the UK and injector replacements are common.

Common TXDB injector failure symptoms

• Rough idle and vibration: Injector imbalance causes noticeable vibration at idle.
• DPF regeneration failure: Poor combustion from worn injectors overloads the DPF.
• Engine management light: Injector fault codes stored in the PCM.
• White smoke on cold start: Leaking injectors allow fuel to pool in cylinders overnight.

Why TXDB injectors fail

• fuel contamination
• high-pressure wear cycles
• carbon buildup
• poor fuel quality
• internal valve wear

How to diagnose TXDB injector faults

1. Read fault codes: Connect an OBD-II scanner and note any injector-related codes (P0201–P0204, P2146, P2149). This identifies which cylinder is affected.
2. Perform a leak-off test: Disconnect the fuel return pipes and route into measuring containers. Run the engine at idle for 60 seconds. Compare volumes per cylinder against manufacturer spec.
3. Listen for injector tick: Use a mechanic's stethoscope on each injector body. A dead or irregular tick indicates a stuck or failing solenoid.
4. Check fuel rail pressure: Monitor live fuel rail pressure data via diagnostic tool. Low pressure can mimic injector symptoms and may indicate a fuel pump issue instead.
5. Inspect for external leaks: Check around injector seals for signs of fuel or combustion gas leakage. Black carbon deposits indicate a blown seal.
6. Cylinder balance test: Use diagnostic software to run a cylinder contribution test. This electronically disables each injector in turn to measure its effect on engine speed.

Fault codes linked to TXDB injector issues

• P0201-P0204 – Injector circuit malfunction
• P2002 – DPF efficiency below threshold

TXDB repair advice

Check whether your TXDB has Bosch or Delphi injectors before ordering. IMA coding required after replacement via Ford IDS or compatible tool.

TXDB injector replacement cost (UK)

• Per injector: £180 - £350
• Full set: £700 - £1,200
• Labour: £120 - £300

Compatible injector part numbers for TXDB

• Bosch 0445110489 – Bosch injector for TXDB (Bosch variant)
• Ford BK2Q-9K546-AG – Ford OE reference

Vehicles using the TXDB engine

• Ford Focus Mk3 (2011-2018)
• Ford Mondeo Mk5 (2014-2022)
• Ford Kuga (2012-2019)
• Ford Galaxy (2015-2020)

Find your exact TXDB injector by registration

Frequently asked questions

How do I tell if my 2.0 TDCi has Bosch or Delphi injectors?

Check the part number on the injector body. Bosch numbers start with 044511xxxx. Delphi numbers start with EJBR or 28xxxxxx.

How much does 2.0 TDCi injector replacement cost?

A set of four costs £450-£800. Labour is 2-3 hours.

How much does it cost to replace injectors?

Replacement typically costs £150–£350 per injector depending on brand and engine. A full set of four with professional fitting usually costs £600–£1,200.

Can I drive with a faulty injector?

Driving with a faulty injector can cause engine damage, increased fuel consumption, DPF contamination, and oil dilution. We recommend diagnosis and replacement as soon as possible.

Do new injectors need coding?

Some vehicles require injector coding after replacement using manufacturer-specific diagnostic tools. Many Bosch solenoid units are plug and play. Check your engine guide for specific requirements.